5) BRAINLIEST AND 10+ POINTS! :)

Mathematics

2 answers:

nevsk [136]3 years ago

8 0

Answer:

Step-by-step explanation:

We see that C = 20y + 15 and that y = 50x + 5, so let's actually substitute the expression 50x + 5 in for y in the first equation:

C = 20y + 15 = 20 * (50x + 5) + 15

Now, simply distribute the 20:

20 * (50x + 5) + 15 = 20 * 50x + 20 * 5 + 15 = 1000x + 100 + 15 = 1000x + 115

Thus, C in terms of x is C = 1000x + 115, or B.

Hope this helps!

yKpoI14uk [10]3 years ago

4 0

Answer:

b) 1000x + 115

Step-by-step explanation:

C = 20y + 15

= 20(50x + 5) + 15

= 1000x + 100 + 15

= 1000x + 115

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